Posts Tagged ‘vision disorder’
If you are having difficulty in reading then you might be suffering from presbyopia. This fairly common vision disorder usually occurs with advancing years, in the patients’ 40s. Presbyopia is caused by the thickening and hardening of the lens of the eye.
Diagnosing the Need for Surgical Reversal of Presbyopia
Since Presbyopia is an age-related disease, it is nothing to get alarmed about. Try and see if you have all the symptoms and visit an ophthalmologist to decide the best method for surgical reversal of Presbyopia. You might need to go for presbyopia treatments if you:
* can’t read small print
* need to keep the material farther away to read it
* suffer eyestrain in reading
* can’t easily see the contrasts between small bits of texts
* ed increased light while doing reading or other works needing close look at objects
Types of Presbyopia Treatments
There are many Presbyopia treatments through which surgical reversal can be achieved. These include:
* Glasses: The use of corrective eye glasses, particularly progressive or bifocal lenses while reading is a common method of vision correction in this case. Single vision or focus glasses are usually prescribed just for the purpose of reading. These glasses will not help you see things across the room the way bifocals can.
* Contact Lenses: Some people prefer wearing contact lenses instead of corrective eye glasses due to their convenience. Interestingly, more and more people are opting for a ‘monovison’ setup where in one lens has correction for near sight while the other has correction for far sight. With both eyes open, vision is generally clear.
* Surgical Treatment: This is a permanent solution for presbyopia. These days, laser techniques such as Lasik are also used for surgical reversal of presbyopia.
Method of Surgical Reversal of Presbyopia
Lasik is the most common of all presbyopia treatments. In this method an incision is made and a flap is created in the cornea with the help of a surgical blade. Then laser is applied to remove the targeted tissue of the cornea to reshape it. The whole process takes just a few minutes and is quite painless.
If you are worried about your failing eyesight, you can consult the eye specialists at the Laser Eye Center of Silicon Valley. The center has the most modern equipment and one of the best treatment success rates in the state of California.
Laser Eye Center of Silicon Valley performs surgical reversal of presbyopia treatments that include laser presbyopia reversal, anterior cilliary sclerotomy and refractive lens exchange.
Article Source:http://www.articlesbase.com/vision-articles/surgical-reversal-of-presbyopia-1748320.html
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Astigmatism correction has gone through a lot of changes and there are now more options than ever. This vision disorder is fairly common. It usually comes from a problem with the cornea, although sometimes it is with the lens of the eye, which results in blurred vision.
The earliest method for correcting astigmatism was through glasses. Eyeglasses have been used for this disorder since 1841. Contact lenses can also be used as corrective mechanisms.
A type of surgery that was once done is astigmatic keratotomy but, with the development of lasik, it is no longer used as often as before.
Astigmatism correction experienced its greatest leap forward with lasik surgery. This laser surgery is used specifically in the case of astigmatism. The surgeon uses the laser on the cornea to correct the defect. Unfortunately, this surgery is considered elective and not normally covered by insurance as the problem can be corrected with lower cost lenses.
Many would prefer to find natural alternatives to all their medical problems. Some people believe that simple dietary changes can make a difference. Chinese herbalists are familiar with herbs that are known to have an effect on improving vision. The studies done on these herbs, however, are rarely done according to Western science parameters.
Another method that is promoted for correcting vision are eye exercises. Proponents of these exercises say that your eyes will get weaker if you rely on lenses to correct your vision, as they will not need to work so hard.
Learn to do eye exercise to correct astigmatism
Article Source:http://www.articlesbase.com/vision-articles/astigmatism-correction-alternatives-how-they-have-changed-1376154.html
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Let’s start by explaining what we mean by “prescription” as there are two meanings in this context and there is often confusion.
Just as glasses can be prescription or non-prescription, so too can contact lenses. Prescription lenses or glasses are intended to correct a vision disorder whereas non-prescription contact lenses or glasses are effectively clear. That is, they do not alter your vision. Colored contact lenses are a typical example of non-prescription contact lenses although it is now possible to get non prescriptioon contacts in a range of colors.
The other thing we mean by the word “prescription” is the piece of paper you get after a sight test which explains the type of contact lens you need to correct your vision. It will detail the curvature of the lens and the strength of the lens.
People who want to buy contact lenses without prescription usually mean that they haven’t had a recent eye test but they want to buy lenses based on their last known prescription. This is also true of people wanting to buy non prescription colored lenses without a prescription.
If you think that your eyesight hasn’t changed you probably think it quite reasonable to buy lenses without an up to date prescription. The same applies if you want to buy colored lenses. The fact is, however, in many countries it is simply impossible to buy contactlenses without prescription, whether they are prescription lenses or not and whether they are colored or not.
You may think that this is unfair, after all, it’s your eyes which might be at risk. But remember this. You only have one pair of eyes and you want to be certain not only of the quality of the lenses you are putting into your eyes but that they are suitable for your eyes. Not every make of lens suits every person, and not every lens will fit your eye. A regular eyesight test will also pick up on any other problems which might have developed in your eyes since your last test.
It makes a lot of sense to get a current prescription, even if you do happen to live somewhere where you can buy contact lenses without prescription.
For more information on getting contact lenses with no prescription, please see www.contactlenseswithoutaprescription.com.
Article Source:http://www.articlesbase.com/vision-articles/contact-lenses-without-prescription-1321464.html
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It is estimated that around 90 million Americans have presbyopia. Presbyopia is an age-related vision disorder that causes a difficulty in seeing objects at close range; people with presbyopia often have to hold reading materials at arms length in order to focus properly.
Presbyopia, unlike other vision impairments, is not selective; it eventually develops in everyone. Most people begin to experience presbyopic symptoms between age 40 and 50, though it varies from individual to individual. In addition to difficulty seeing at close range, other common symptoms include delays in ability to focus, ocular discomfort, headaches, squinting, and needing brighter light for reading.
Presbyopia is a result of the aging process. Other vision impairments such as astigmatism, nearsightedness and farsightedness all relate to the shape of the eye and are generally caused by genetics, disease or trauma. Presbyopia, on the other hand, is caused from a combination of factors. One of these is the steady decrease in flexibility in the natural lens of the eye. Another major contributor is the collective changes that occur in the muscle fibers surrounding the lens, fibers that contract and expand and allow us to see near and far objects. Proteins in the eye also change as a person ages, and make the natural lens harder and less elastic over time. This makes it more difficult to focus on objects at close range.
Living with Presbyopia
Although bifocal eyeglasses are the most common treatment option for presbyopia, other alternatives do exist. Multifocal contact lenses are an option that is growing in popularity. Multifocal contact lenses provide wearers with the convenience of contact lenses without sacrificing quality of vision – wearers are able to see both near and far.
The design of multifocal lenses can be either bifocal – with two lens powers, one for near and one for distance vision – or a multifocal design, which has a gradual change in lens power within the lens.
Multifocal contact lenses are available as a daily wear, overnight wear, or daily disposable lens.
People who already wear contact lenses when they begin to experience presbyopia often report dryness and discomfort with their lenses. The discomfort and dryness is likely a result of the need for a new lens prescription that addresses presbyopia. There are many new lens technologies designed specifically for presbyopia that provide wearers with optimum comfort and high-quality vision.
If you are experiencing symptoms of presbyopia, you should contact your eye care practitioner and have your eyes checked.
For more information on eye health and contact lenses, visit Contact Lens King.
Chelsea K. Francis
Marketing & Research Assistant
Contact Lens King
www.contactlensking.com
Article Source:http://www.articlesbase.com/vision-articles/presbyopias-effects-and-treatment-options-1037817.html
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